---
title: Pure water freezes at 0 °C, and ice melts at the same temperature, 0… — Melting, freezing and boiling · tree and pragmatics
description: Pure water freezes at 0 °C, and ice melts at the same temperature, 0 °C. Who acts: Pure water, ice. A sentence of the lesson «Melting, freezing and boiling» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Melting, freezing and boiling, sentence 2

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Pure water freezes at 0 °C, and ice melts at the same temperature, 0 °C.

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**Who acts:** Pure water, ice · **What happens:** freeze, melt · **To what, where:** 0 ° C, same temperature

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This is a sentence of the lesson «Melting, freezing and boiling» of the world course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Pure water, ice), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:012-melting-freezing-boiling.lesson:2
# text = Pure water freezes at 0 °C, and ice melts at the same temperature, 0 °C.
# source = school lesson (ours)
# course = world
# lesson = 012-melting-freezing-boiling.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×1
1	Pure	pure	ADJ	JJ	Degree=Pos	2	amod	_	Agree=R5-strong|Haiku=3:amod
2	water	water	NOUN	NN	Number=Sing	3	nsubj	_	Agree=R7-rel-agree|Haiku=3:compound
3	freezes	freeze	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	at	at	ADP	IN	_	7	case	_	_
5	0	0	NUM	CD	NumForm=Digit|NumType=Card	7	nummod	_	_
6	°	°	NOUN	NN	Number=Sing	7	compound	_	_
7	C	c	NOUN	NN	Number=Sing	3	obl	_	_
8	,	,	PUNCT	,	_	11	punct	_	_
9	and	and	CCONJ	CC	_	11	cc	_	_
10	ice	ice	NOUN	NN	Number=Sing	11	nsubj	_	_
11	melts	melt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
12	at	at	ADP	IN	_	15	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
14	same	same	ADJ	JJ	Degree=Pos	15	amod	_	_
15	temperature	temperature	NOUN	NN	Number=Sing	11	obl	_	_
16	,	,	PUNCT	,	_	19	punct	_	_
17	0	0	NUM	CD	NumForm=Digit|NumType=Card	19	nummod	_	_
18	°	°	NOUN	NN	Number=Sing	19	compound	_	_
19	C.	c.	NOUN	NN	Number=Sing	15	appos	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze** | present | Pure water |  |  | 0 ° C |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 2 | **melt** | present | ice |  |  | the same temperature |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |

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One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:world:012-melting-freezing-boiling.lesson:2`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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